Flow cell



FIG. 1 is a left view of the flow cell of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is an isometric view thereof.

The optical flow cell of the present invention is installed in an oil and gas infrastructure, such as a pipeline, and provides an in-line measurement of hydrocarbon composition, API gravity, vapor pressure, BTU and other properties of natural gas, natural gas, condensate and crude oil in the infrastructure. The optical flow cell is installed directly in a flow stream at operating pressure and temperature. 

CLAIM The ornamental design for a flow cell, as shown and described. 